An issue was discovered in write_tpt_entry in drivers/infiniband/hw/cxgb4/mem.c in the Linux kernel through 5.3.2. The cxgb4 driver is directly calling dma_map_single (a DMA function) from a stack variable. This could allow an attacker to trigger a Denial of Service, exploitable if this driver is used on an architecture for which this stack/DMA interaction has security relevance.
https://lore.kernel.org/lkml/[email protected]
https://seclists.org/bugtraq/2019/Nov/11
https://usn.ubuntu.com/4208-1/
https://usn.ubuntu.com/4210-1/
https://usn.ubuntu.com/4211-2/
https://usn.ubuntu.com/4211-1/
https://usn.ubuntu.com/4226-1/
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
Source: MITRE
Published: 2019-10-01
Updated: 2021-06-14
Type: NVD-CWE-noinfo
Base Score: 7.1
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 8.6
Severity: HIGH
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH